Automatic marine governor



(No Model.)

0. DIOKENSON.

AUTOMATIC MARINE GOVERNOR.

Patented Mar. 16, 1886.

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"ATENT CHARLES DIGKENSON, OF PORTLAND, OREGON.

AUTOMATIC MARINE GOVERNOR.

EPECIFICATIQN forming part of Letters Patent No. 337,817, dated March16, 1886.

Application filed July 8, 1885. Serial No. 170,928.

To all whom, it may concern:

Beit known that 1, CHARLES DICKENSON, a citizen of the United States,residing at Portland, in the county of Multnomah and State of Oregon,have invented certain new and useful Improvements in Automatic MarineGovernors; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters and figures ofreference marked thereon, which form a part of this specification.

My invention has relation to marine governors for steamships, and theobjectis to provide an automatic device for regulating the speed oftheengines; and to this end the novelty consists in a float located nearthe screw on the outside of the vessel, so arranged as to be operated bythe water to raise and lower it, and provided with means fortransmitting said motion directly and instantly to the throttle or anindependent governor valve, whereby the supply of steam to the engineswill be increased or diminished as the waves raise or lower the floatand in proportion to the distance which the float rises and falls, aswill be hereinafter more fully described.

In the accompanying drawings the same letters of reference indicate thesame parts of the invention.

Figure 1 is a longitudinal sectional view of a steamship with myimproved governor in position, and Fig. 2 a detail of the valve-gear.

A is a guide-rod, preferably made of pipe, and screwed into the hingedshoe B, while its upper end passes through a guide-bracket, G.

D is a hollow metal float, which may be fashioned after any suitableornamental design. This float has a free vertical movement the entirelength of the guide-rod A,on which it slides, and the guide-rod may beround, as shown, or angular, to prevent the float revolving about therod. \Vhere the round guiderod is used,tl1e tail of the figure floatforms a rudder, d, and when the vessel is in motion it keeps the floatin its proper position.

In case it is necessary to apply the governor to a vessel while afloat,it can be done without docking her by securing the lower end of the (NomodeLl guide-rod in position by stays or braces in any convenientmanner.

From the float D a chain, E, runs over anti-frictional pulleys to apulley, e, thence around a block, F, secured to the governorlever G, andback again to the hook e on the pulley 0. It will thus be seen that thelever G is raised as the float D falls, and, reversely, the lever lowersas the float rises. The lever G is attached to a plug-cock orgovernorvalve. H, so arranged that when the lever is up to its highestpoint the supply of steam is entirely shut off, and when the lever is atits lowest point the said valve is open to its full limit. Therefore, asthe float falls it raises the lever and cuts off the steam proportionateto the distance which the float moves, and as the float rises the leverfalls and admits steam likewise in the same proportion, and as the floatis set or adjusted to correspond to the draft of the ship and positionof the screw it follows that as a wave leaves a portion of the screwbare the float falls to that exact point, and consequently an amount ofsteam is cut off proportionate to the surface of screw exposed above thewater, and should awave leave the screw entirely bare the lever G may beso adj ustcd as to not cut the steam off entirely, but keep the enginesrevolving, to prevent an undue strain on the screw when it again entersthe water and the full head of steam is turned on. The pulley e isadjustably secured to the lever G by a thumb-screw, c, by means of whichit may be moved in or out on the lever to compensate for the water orload line of the vessel, so that the float may be correspondin gl y setwhether the vessel is light or loaded.

1 is a weight on the lever G, adj ustably secured thereon by aset-screw, t, to counterbalance the weight of the float, which of coursemay be appropriately weighted to overcome the friction of the chain,pulleys, and valve, and thus secure an instant movement of the valve foreach variation of the float.

Vhen the vessel is in the dock or in calm waters and the service of thegovernor not needed, the engineer by means of the chain may raise thefloat up under the stern, and whether it is in use or not it in no wayinterferes with the use of the regular throttlevalve, K.

A very important feature of my improved I 1. In a marine governor, afloat located in governor is, that it is operated entirely andautomatically by the action of the water irrespeotive of the position ofthe vessel, as in a chop-sea the vessel may maintain acomparativelylevel position,'while the waves will rise and fall so as toexpose the screw, and consequently a governor operated by the motion ofthe vessel would not be effective or reliable; but in my case the floatresponds to every variation of the water-level, irrespective of themotion orposition of the shipa result that must be attained to produce aperfect governor for marine use.

Having thus fully described my invention, what I claim as new anduseful, and desire to secure by Letters Patent of the United States, 1s

the rear of therudder outside of the vessel, so as to be operated by thewater, and means for transmitting said motion to the governorvalve,substantially as set forth.

2'. The combination, with the float D, having rudder d, of the guide-rodA, chain E, lever G, and valve H, as and for the purpose set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

CHARLES DIoKENsoN.

Witnesses:

E. H. BRADFORD, PHILIP MCALEER.

